I went to the dealer last friday : the bike has now 20' miles and needed the valves control which I knew would be useless. But as long as I skipped the 2nd visit (15' miles) because I changed oil and plugs myself I thought a needed the dealer's stamp in order to keep the bike warranty.
I took one hour for the mechanics to take a look at the valves and I asked him to fix my new K&N air filter = two hours more

You must take off the side fairings and the fuel tank completely.
But the fact is that now the bike is incredibly smooth and so responsive to the throttle, finely tuned like a cello
